| 1 | #include <unistd.h> |
| 2 | #include <fcntl.h> |
| 3 | #include <string.h> |
| 4 | #include <assert.h> |
| 5 | #include <dirent.h> |
| 6 | #include <libgen.h> |
| 7 | #include <sys/stat.h> |
| 8 | #include <sys/mman.h> |
| 9 | #include <sys/types.h> |
| 10 | |
| 11 | #include "fio.h" |
| 12 | #include "smalloc.h" |
| 13 | #include "filehash.h" |
| 14 | #include "options.h" |
| 15 | #include "os/os.h" |
| 16 | #include "hash.h" |
| 17 | #include "lib/axmap.h" |
| 18 | |
| 19 | #ifdef CONFIG_LINUX_FALLOCATE |
| 20 | #include <linux/falloc.h> |
| 21 | #endif |
| 22 | |
| 23 | static int root_warn; |
| 24 | |
| 25 | static FLIST_HEAD(filename_list); |
| 26 | |
| 27 | static inline void clear_error(struct thread_data *td) |
| 28 | { |
| 29 | td->error = 0; |
| 30 | td->verror[0] = '\0'; |
| 31 | } |
| 32 | |
| 33 | /* |
| 34 | * Leaves f->fd open on success, caller must close |
| 35 | */ |
| 36 | static int extend_file(struct thread_data *td, struct fio_file *f) |
| 37 | { |
| 38 | int r, new_layout = 0, unlink_file = 0, flags; |
| 39 | unsigned long long left; |
| 40 | unsigned int bs; |
| 41 | char *b = NULL; |
| 42 | |
| 43 | if (read_only) { |
| 44 | log_err("fio: refusing extend of file due to read-only\n"); |
| 45 | return 0; |
| 46 | } |
| 47 | |
| 48 | /* |
| 49 | * check if we need to lay the file out complete again. fio |
| 50 | * does that for operations involving reads, or for writes |
| 51 | * where overwrite is set |
| 52 | */ |
| 53 | if (td_read(td) || |
| 54 | (td_write(td) && td->o.overwrite && !td->o.file_append) || |
| 55 | (td_write(td) && td->io_ops->flags & FIO_NOEXTEND)) |
| 56 | new_layout = 1; |
| 57 | if (td_write(td) && !td->o.overwrite && !td->o.file_append) |
| 58 | unlink_file = 1; |
| 59 | |
| 60 | if (unlink_file || new_layout) { |
| 61 | dprint(FD_FILE, "layout unlink %s\n", f->file_name); |
| 62 | if ((td_io_unlink_file(td, f) < 0) && (errno != ENOENT)) { |
| 63 | td_verror(td, errno, "unlink"); |
| 64 | return 1; |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | flags = O_WRONLY; |
| 69 | if (td->o.allow_create) |
| 70 | flags |= O_CREAT; |
| 71 | if (new_layout) |
| 72 | flags |= O_TRUNC; |
| 73 | |
| 74 | #ifdef WIN32 |
| 75 | flags |= _O_BINARY; |
| 76 | #endif |
| 77 | |
| 78 | dprint(FD_FILE, "open file %s, flags %x\n", f->file_name, flags); |
| 79 | f->fd = open(f->file_name, flags, 0644); |
| 80 | if (f->fd < 0) { |
| 81 | int err = errno; |
| 82 | |
| 83 | if (err == ENOENT && !td->o.allow_create) |
| 84 | log_err("fio: file creation disallowed by " |
| 85 | "allow_file_create=0\n"); |
| 86 | else |
| 87 | td_verror(td, err, "open"); |
| 88 | return 1; |
| 89 | } |
| 90 | |
| 91 | #ifdef CONFIG_POSIX_FALLOCATE |
| 92 | if (!td->o.fill_device) { |
| 93 | switch (td->o.fallocate_mode) { |
| 94 | case FIO_FALLOCATE_NONE: |
| 95 | break; |
| 96 | case FIO_FALLOCATE_POSIX: |
| 97 | dprint(FD_FILE, "posix_fallocate file %s size %llu\n", |
| 98 | f->file_name, |
| 99 | (unsigned long long) f->real_file_size); |
| 100 | |
| 101 | r = posix_fallocate(f->fd, 0, f->real_file_size); |
| 102 | if (r > 0) { |
| 103 | log_err("fio: posix_fallocate fails: %s\n", |
| 104 | strerror(r)); |
| 105 | } |
| 106 | break; |
| 107 | #ifdef CONFIG_LINUX_FALLOCATE |
| 108 | case FIO_FALLOCATE_KEEP_SIZE: |
| 109 | dprint(FD_FILE, |
| 110 | "fallocate(FALLOC_FL_KEEP_SIZE) " |
| 111 | "file %s size %llu\n", f->file_name, |
| 112 | (unsigned long long) f->real_file_size); |
| 113 | |
| 114 | r = fallocate(f->fd, FALLOC_FL_KEEP_SIZE, 0, |
| 115 | f->real_file_size); |
| 116 | if (r != 0) |
| 117 | td_verror(td, errno, "fallocate"); |
| 118 | |
| 119 | break; |
| 120 | #endif /* CONFIG_LINUX_FALLOCATE */ |
| 121 | default: |
| 122 | log_err("fio: unknown fallocate mode: %d\n", |
| 123 | td->o.fallocate_mode); |
| 124 | assert(0); |
| 125 | } |
| 126 | } |
| 127 | #endif /* CONFIG_POSIX_FALLOCATE */ |
| 128 | |
| 129 | if (!new_layout) |
| 130 | goto done; |
| 131 | |
| 132 | /* |
| 133 | * The size will be -1ULL when fill_device is used, so don't truncate |
| 134 | * or fallocate this file, just write it |
| 135 | */ |
| 136 | if (!td->o.fill_device) { |
| 137 | dprint(FD_FILE, "truncate file %s, size %llu\n", f->file_name, |
| 138 | (unsigned long long) f->real_file_size); |
| 139 | if (ftruncate(f->fd, f->real_file_size) == -1) { |
| 140 | if (errno != EFBIG) { |
| 141 | td_verror(td, errno, "ftruncate"); |
| 142 | goto err; |
| 143 | } |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | b = malloc(td->o.max_bs[DDIR_WRITE]); |
| 148 | |
| 149 | left = f->real_file_size; |
| 150 | while (left && !td->terminate) { |
| 151 | bs = td->o.max_bs[DDIR_WRITE]; |
| 152 | if (bs > left) |
| 153 | bs = left; |
| 154 | |
| 155 | fill_io_buffer(td, b, bs, bs); |
| 156 | |
| 157 | r = write(f->fd, b, bs); |
| 158 | |
| 159 | if (r > 0) { |
| 160 | left -= r; |
| 161 | continue; |
| 162 | } else { |
| 163 | if (r < 0) { |
| 164 | int __e = errno; |
| 165 | |
| 166 | if (__e == ENOSPC) { |
| 167 | if (td->o.fill_device) |
| 168 | break; |
| 169 | log_info("fio: ENOSPC on laying out " |
| 170 | "file, stopping\n"); |
| 171 | break; |
| 172 | } |
| 173 | td_verror(td, errno, "write"); |
| 174 | } else |
| 175 | td_verror(td, EIO, "write"); |
| 176 | |
| 177 | break; |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | if (td->terminate) { |
| 182 | dprint(FD_FILE, "terminate unlink %s\n", f->file_name); |
| 183 | td_io_unlink_file(td, f); |
| 184 | } else if (td->o.create_fsync) { |
| 185 | if (fsync(f->fd) < 0) { |
| 186 | td_verror(td, errno, "fsync"); |
| 187 | goto err; |
| 188 | } |
| 189 | } |
| 190 | if (td->o.fill_device && !td_write(td)) { |
| 191 | fio_file_clear_size_known(f); |
| 192 | if (td_io_get_file_size(td, f)) |
| 193 | goto err; |
| 194 | if (f->io_size > f->real_file_size) |
| 195 | f->io_size = f->real_file_size; |
| 196 | } |
| 197 | |
| 198 | free(b); |
| 199 | done: |
| 200 | return 0; |
| 201 | err: |
| 202 | close(f->fd); |
| 203 | f->fd = -1; |
| 204 | if (b) |
| 205 | free(b); |
| 206 | return 1; |
| 207 | } |
| 208 | |
| 209 | static int pre_read_file(struct thread_data *td, struct fio_file *f) |
| 210 | { |
| 211 | int ret = 0, r, did_open = 0, old_runstate; |
| 212 | unsigned long long left; |
| 213 | unsigned int bs; |
| 214 | char *b; |
| 215 | |
| 216 | if (td->io_ops->flags & FIO_PIPEIO) |
| 217 | return 0; |
| 218 | |
| 219 | if (!fio_file_open(f)) { |
| 220 | if (td->io_ops->open_file(td, f)) { |
| 221 | log_err("fio: cannot pre-read, failed to open file\n"); |
| 222 | return 1; |
| 223 | } |
| 224 | did_open = 1; |
| 225 | } |
| 226 | |
| 227 | old_runstate = td_bump_runstate(td, TD_PRE_READING); |
| 228 | |
| 229 | bs = td->o.max_bs[DDIR_READ]; |
| 230 | b = malloc(bs); |
| 231 | memset(b, 0, bs); |
| 232 | |
| 233 | if (lseek(f->fd, f->file_offset, SEEK_SET) < 0) { |
| 234 | td_verror(td, errno, "lseek"); |
| 235 | log_err("fio: failed to lseek pre-read file\n"); |
| 236 | ret = 1; |
| 237 | goto error; |
| 238 | } |
| 239 | |
| 240 | left = f->io_size; |
| 241 | |
| 242 | while (left && !td->terminate) { |
| 243 | if (bs > left) |
| 244 | bs = left; |
| 245 | |
| 246 | r = read(f->fd, b, bs); |
| 247 | |
| 248 | if (r == (int) bs) { |
| 249 | left -= bs; |
| 250 | continue; |
| 251 | } else { |
| 252 | td_verror(td, EIO, "pre_read"); |
| 253 | break; |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | error: |
| 258 | td_restore_runstate(td, old_runstate); |
| 259 | |
| 260 | if (did_open) |
| 261 | td->io_ops->close_file(td, f); |
| 262 | |
| 263 | free(b); |
| 264 | return ret; |
| 265 | } |
| 266 | |
| 267 | static unsigned long long get_rand_file_size(struct thread_data *td) |
| 268 | { |
| 269 | unsigned long long ret, sized; |
| 270 | unsigned long r; |
| 271 | |
| 272 | r = __rand(&td->file_size_state); |
| 273 | sized = td->o.file_size_high - td->o.file_size_low; |
| 274 | ret = (unsigned long long) ((double) sized * (r / (FRAND_MAX + 1.0))); |
| 275 | ret += td->o.file_size_low; |
| 276 | ret -= (ret % td->o.rw_min_bs); |
| 277 | return ret; |
| 278 | } |
| 279 | |
| 280 | static int file_size(struct thread_data *td, struct fio_file *f) |
| 281 | { |
| 282 | struct stat st; |
| 283 | |
| 284 | if (stat(f->file_name, &st) == -1) { |
| 285 | td_verror(td, errno, "fstat"); |
| 286 | return 1; |
| 287 | } |
| 288 | |
| 289 | f->real_file_size = st.st_size; |
| 290 | return 0; |
| 291 | } |
| 292 | |
| 293 | static int bdev_size(struct thread_data *td, struct fio_file *f) |
| 294 | { |
| 295 | unsigned long long bytes = 0; |
| 296 | int r; |
| 297 | |
| 298 | if (td->io_ops->open_file(td, f)) { |
| 299 | log_err("fio: failed opening blockdev %s for size check\n", |
| 300 | f->file_name); |
| 301 | return 1; |
| 302 | } |
| 303 | |
| 304 | r = blockdev_size(f, &bytes); |
| 305 | if (r) { |
| 306 | td_verror(td, r, "blockdev_size"); |
| 307 | goto err; |
| 308 | } |
| 309 | |
| 310 | if (!bytes) { |
| 311 | log_err("%s: zero sized block device?\n", f->file_name); |
| 312 | goto err; |
| 313 | } |
| 314 | |
| 315 | f->real_file_size = bytes; |
| 316 | td->io_ops->close_file(td, f); |
| 317 | return 0; |
| 318 | err: |
| 319 | td->io_ops->close_file(td, f); |
| 320 | return 1; |
| 321 | } |
| 322 | |
| 323 | static int char_size(struct thread_data *td, struct fio_file *f) |
| 324 | { |
| 325 | #ifdef FIO_HAVE_CHARDEV_SIZE |
| 326 | unsigned long long bytes = 0; |
| 327 | int r; |
| 328 | |
| 329 | if (td->io_ops->open_file(td, f)) { |
| 330 | log_err("fio: failed opening blockdev %s for size check\n", |
| 331 | f->file_name); |
| 332 | return 1; |
| 333 | } |
| 334 | |
| 335 | r = chardev_size(f, &bytes); |
| 336 | if (r) { |
| 337 | td_verror(td, r, "chardev_size"); |
| 338 | goto err; |
| 339 | } |
| 340 | |
| 341 | if (!bytes) { |
| 342 | log_err("%s: zero sized char device?\n", f->file_name); |
| 343 | goto err; |
| 344 | } |
| 345 | |
| 346 | f->real_file_size = bytes; |
| 347 | td->io_ops->close_file(td, f); |
| 348 | return 0; |
| 349 | err: |
| 350 | td->io_ops->close_file(td, f); |
| 351 | return 1; |
| 352 | #else |
| 353 | f->real_file_size = -1ULL; |
| 354 | return 0; |
| 355 | #endif |
| 356 | } |
| 357 | |
| 358 | static int get_file_size(struct thread_data *td, struct fio_file *f) |
| 359 | { |
| 360 | int ret = 0; |
| 361 | |
| 362 | if (fio_file_size_known(f)) |
| 363 | return 0; |
| 364 | |
| 365 | if (f->filetype == FIO_TYPE_FILE) |
| 366 | ret = file_size(td, f); |
| 367 | else if (f->filetype == FIO_TYPE_BD) |
| 368 | ret = bdev_size(td, f); |
| 369 | else if (f->filetype == FIO_TYPE_CHAR) |
| 370 | ret = char_size(td, f); |
| 371 | else |
| 372 | f->real_file_size = -1; |
| 373 | |
| 374 | if (ret) |
| 375 | return ret; |
| 376 | |
| 377 | if (f->file_offset > f->real_file_size) { |
| 378 | log_err("%s: offset extends end (%llu > %llu)\n", td->o.name, |
| 379 | (unsigned long long) f->file_offset, |
| 380 | (unsigned long long) f->real_file_size); |
| 381 | return 1; |
| 382 | } |
| 383 | |
| 384 | fio_file_set_size_known(f); |
| 385 | return 0; |
| 386 | } |
| 387 | |
| 388 | static int __file_invalidate_cache(struct thread_data *td, struct fio_file *f, |
| 389 | unsigned long long off, |
| 390 | unsigned long long len) |
| 391 | { |
| 392 | int ret = 0; |
| 393 | |
| 394 | #ifdef CONFIG_ESX |
| 395 | return 0; |
| 396 | #endif |
| 397 | |
| 398 | if (len == -1ULL) |
| 399 | len = f->io_size; |
| 400 | if (off == -1ULL) |
| 401 | off = f->file_offset; |
| 402 | |
| 403 | if (len == -1ULL || off == -1ULL) |
| 404 | return 0; |
| 405 | |
| 406 | dprint(FD_IO, "invalidate cache %s: %llu/%llu\n", f->file_name, off, |
| 407 | len); |
| 408 | |
| 409 | if (td->io_ops->invalidate) |
| 410 | ret = td->io_ops->invalidate(td, f); |
| 411 | else if (f->filetype == FIO_TYPE_FILE) |
| 412 | ret = posix_fadvise(f->fd, off, len, POSIX_FADV_DONTNEED); |
| 413 | else if (f->filetype == FIO_TYPE_BD) { |
| 414 | ret = blockdev_invalidate_cache(f); |
| 415 | if (ret < 0 && errno == EACCES && geteuid()) { |
| 416 | if (!root_warn) { |
| 417 | log_err("fio: only root may flush block " |
| 418 | "devices. Cache flush bypassed!\n"); |
| 419 | root_warn = 1; |
| 420 | } |
| 421 | ret = 0; |
| 422 | } |
| 423 | } else if (f->filetype == FIO_TYPE_CHAR || f->filetype == FIO_TYPE_PIPE) |
| 424 | ret = 0; |
| 425 | |
| 426 | /* |
| 427 | * Cache flushing isn't a fatal condition, and we know it will |
| 428 | * happen on some platforms where we don't have the proper |
| 429 | * function to flush eg block device caches. So just warn and |
| 430 | * continue on our way. |
| 431 | */ |
| 432 | if (ret) { |
| 433 | log_info("fio: cache invalidation of %s failed: %s\n", f->file_name, strerror(errno)); |
| 434 | ret = 0; |
| 435 | } |
| 436 | |
| 437 | return 0; |
| 438 | |
| 439 | } |
| 440 | |
| 441 | int file_invalidate_cache(struct thread_data *td, struct fio_file *f) |
| 442 | { |
| 443 | if (!fio_file_open(f)) |
| 444 | return 0; |
| 445 | |
| 446 | return __file_invalidate_cache(td, f, -1ULL, -1ULL); |
| 447 | } |
| 448 | |
| 449 | int generic_close_file(struct thread_data fio_unused *td, struct fio_file *f) |
| 450 | { |
| 451 | int ret = 0; |
| 452 | |
| 453 | dprint(FD_FILE, "fd close %s\n", f->file_name); |
| 454 | |
| 455 | remove_file_hash(f); |
| 456 | |
| 457 | if (close(f->fd) < 0) |
| 458 | ret = errno; |
| 459 | |
| 460 | f->fd = -1; |
| 461 | |
| 462 | if (f->shadow_fd != -1) { |
| 463 | close(f->shadow_fd); |
| 464 | f->shadow_fd = -1; |
| 465 | } |
| 466 | |
| 467 | f->engine_data = 0; |
| 468 | return ret; |
| 469 | } |
| 470 | |
| 471 | int file_lookup_open(struct fio_file *f, int flags) |
| 472 | { |
| 473 | struct fio_file *__f; |
| 474 | int from_hash; |
| 475 | |
| 476 | __f = lookup_file_hash(f->file_name); |
| 477 | if (__f) { |
| 478 | dprint(FD_FILE, "found file in hash %s\n", f->file_name); |
| 479 | /* |
| 480 | * racy, need the __f->lock locked |
| 481 | */ |
| 482 | f->lock = __f->lock; |
| 483 | from_hash = 1; |
| 484 | } else { |
| 485 | dprint(FD_FILE, "file not found in hash %s\n", f->file_name); |
| 486 | from_hash = 0; |
| 487 | } |
| 488 | |
| 489 | #ifdef WIN32 |
| 490 | flags |= _O_BINARY; |
| 491 | #endif |
| 492 | |
| 493 | f->fd = open(f->file_name, flags, 0600); |
| 494 | return from_hash; |
| 495 | } |
| 496 | |
| 497 | static int file_close_shadow_fds(struct thread_data *td) |
| 498 | { |
| 499 | struct fio_file *f; |
| 500 | int num_closed = 0; |
| 501 | unsigned int i; |
| 502 | |
| 503 | for_each_file(td, f, i) { |
| 504 | if (f->shadow_fd == -1) |
| 505 | continue; |
| 506 | |
| 507 | close(f->shadow_fd); |
| 508 | f->shadow_fd = -1; |
| 509 | num_closed++; |
| 510 | } |
| 511 | |
| 512 | return num_closed; |
| 513 | } |
| 514 | |
| 515 | int generic_open_file(struct thread_data *td, struct fio_file *f) |
| 516 | { |
| 517 | int is_std = 0; |
| 518 | int flags = 0; |
| 519 | int from_hash = 0; |
| 520 | |
| 521 | dprint(FD_FILE, "fd open %s\n", f->file_name); |
| 522 | |
| 523 | if (!strcmp(f->file_name, "-")) { |
| 524 | if (td_rw(td)) { |
| 525 | log_err("fio: can't read/write to stdin/out\n"); |
| 526 | return 1; |
| 527 | } |
| 528 | is_std = 1; |
| 529 | |
| 530 | /* |
| 531 | * move output logging to stderr, if we are writing to stdout |
| 532 | */ |
| 533 | if (td_write(td)) |
| 534 | f_out = stderr; |
| 535 | } |
| 536 | |
| 537 | if (td_trim(td)) |
| 538 | goto skip_flags; |
| 539 | if (td->o.odirect) |
| 540 | flags |= OS_O_DIRECT; |
| 541 | if (td->o.oatomic) { |
| 542 | if (!FIO_O_ATOMIC) { |
| 543 | td_verror(td, EINVAL, "OS does not support atomic IO"); |
| 544 | return 1; |
| 545 | } |
| 546 | flags |= OS_O_DIRECT | FIO_O_ATOMIC; |
| 547 | } |
| 548 | if (td->o.sync_io) |
| 549 | flags |= O_SYNC; |
| 550 | if (td->o.create_on_open && td->o.allow_create) |
| 551 | flags |= O_CREAT; |
| 552 | skip_flags: |
| 553 | if (f->filetype != FIO_TYPE_FILE) |
| 554 | flags |= FIO_O_NOATIME; |
| 555 | |
| 556 | open_again: |
| 557 | if (td_write(td)) { |
| 558 | if (!read_only) |
| 559 | flags |= O_RDWR; |
| 560 | |
| 561 | if (f->filetype == FIO_TYPE_FILE && td->o.allow_create) |
| 562 | flags |= O_CREAT; |
| 563 | |
| 564 | if (is_std) |
| 565 | f->fd = dup(STDOUT_FILENO); |
| 566 | else |
| 567 | from_hash = file_lookup_open(f, flags); |
| 568 | } else if (td_read(td)) { |
| 569 | if (f->filetype == FIO_TYPE_CHAR && !read_only) |
| 570 | flags |= O_RDWR; |
| 571 | else |
| 572 | flags |= O_RDONLY; |
| 573 | |
| 574 | if (is_std) |
| 575 | f->fd = dup(STDIN_FILENO); |
| 576 | else |
| 577 | from_hash = file_lookup_open(f, flags); |
| 578 | } else { //td trim |
| 579 | flags |= O_RDWR; |
| 580 | from_hash = file_lookup_open(f, flags); |
| 581 | } |
| 582 | |
| 583 | if (f->fd == -1) { |
| 584 | char buf[FIO_VERROR_SIZE]; |
| 585 | int __e = errno; |
| 586 | |
| 587 | if (__e == EPERM && (flags & FIO_O_NOATIME)) { |
| 588 | flags &= ~FIO_O_NOATIME; |
| 589 | goto open_again; |
| 590 | } |
| 591 | if (__e == EMFILE && file_close_shadow_fds(td)) |
| 592 | goto open_again; |
| 593 | |
| 594 | snprintf(buf, sizeof(buf), "open(%s)", f->file_name); |
| 595 | |
| 596 | if (__e == EINVAL && (flags & OS_O_DIRECT)) { |
| 597 | log_err("fio: looks like your file system does not " \ |
| 598 | "support direct=1/buffered=0\n"); |
| 599 | } |
| 600 | |
| 601 | td_verror(td, __e, buf); |
| 602 | return 1; |
| 603 | } |
| 604 | |
| 605 | if (!from_hash && f->fd != -1) { |
| 606 | if (add_file_hash(f)) { |
| 607 | int fio_unused ret; |
| 608 | |
| 609 | /* |
| 610 | * Stash away descriptor for later close. This is to |
| 611 | * work-around a "feature" on Linux, where a close of |
| 612 | * an fd that has been opened for write will trigger |
| 613 | * udev to call blkid to check partitions, fs id, etc. |
| 614 | * That pollutes the device cache, which can slow down |
| 615 | * unbuffered accesses. |
| 616 | */ |
| 617 | if (f->shadow_fd == -1) |
| 618 | f->shadow_fd = f->fd; |
| 619 | else { |
| 620 | /* |
| 621 | * OK to ignore, we haven't done anything |
| 622 | * with it |
| 623 | */ |
| 624 | ret = generic_close_file(td, f); |
| 625 | } |
| 626 | goto open_again; |
| 627 | } |
| 628 | } |
| 629 | |
| 630 | return 0; |
| 631 | } |
| 632 | |
| 633 | int generic_get_file_size(struct thread_data *td, struct fio_file *f) |
| 634 | { |
| 635 | return get_file_size(td, f); |
| 636 | } |
| 637 | |
| 638 | /* |
| 639 | * open/close all files, so that ->real_file_size gets set |
| 640 | */ |
| 641 | static int get_file_sizes(struct thread_data *td) |
| 642 | { |
| 643 | struct fio_file *f; |
| 644 | unsigned int i; |
| 645 | int err = 0; |
| 646 | |
| 647 | for_each_file(td, f, i) { |
| 648 | dprint(FD_FILE, "get file size for %p/%d/%p\n", f, i, |
| 649 | f->file_name); |
| 650 | |
| 651 | if (td_io_get_file_size(td, f)) { |
| 652 | if (td->error != ENOENT) { |
| 653 | log_err("%s\n", td->verror); |
| 654 | err = 1; |
| 655 | break; |
| 656 | } |
| 657 | clear_error(td); |
| 658 | } |
| 659 | |
| 660 | if (f->real_file_size == -1ULL && td->o.size) |
| 661 | f->real_file_size = td->o.size / td->o.nr_files; |
| 662 | } |
| 663 | |
| 664 | return err; |
| 665 | } |
| 666 | |
| 667 | struct fio_mount { |
| 668 | struct flist_head list; |
| 669 | const char *base; |
| 670 | char __base[256]; |
| 671 | unsigned int key; |
| 672 | }; |
| 673 | |
| 674 | /* |
| 675 | * Get free number of bytes for each file on each unique mount. |
| 676 | */ |
| 677 | static unsigned long long get_fs_free_counts(struct thread_data *td) |
| 678 | { |
| 679 | struct flist_head *n, *tmp; |
| 680 | unsigned long long ret = 0; |
| 681 | struct fio_mount *fm; |
| 682 | FLIST_HEAD(list); |
| 683 | struct fio_file *f; |
| 684 | unsigned int i; |
| 685 | |
| 686 | for_each_file(td, f, i) { |
| 687 | struct stat sb; |
| 688 | char buf[256]; |
| 689 | |
| 690 | if (f->filetype == FIO_TYPE_BD || f->filetype == FIO_TYPE_CHAR) { |
| 691 | if (f->real_file_size != -1ULL) |
| 692 | ret += f->real_file_size; |
| 693 | continue; |
| 694 | } else if (f->filetype != FIO_TYPE_FILE) |
| 695 | continue; |
| 696 | |
| 697 | buf[255] = '\0'; |
| 698 | strncpy(buf, f->file_name, 255); |
| 699 | |
| 700 | if (stat(buf, &sb) < 0) { |
| 701 | if (errno != ENOENT) |
| 702 | break; |
| 703 | strcpy(buf, "."); |
| 704 | if (stat(buf, &sb) < 0) |
| 705 | break; |
| 706 | } |
| 707 | |
| 708 | fm = NULL; |
| 709 | flist_for_each(n, &list) { |
| 710 | fm = flist_entry(n, struct fio_mount, list); |
| 711 | if (fm->key == sb.st_dev) |
| 712 | break; |
| 713 | |
| 714 | fm = NULL; |
| 715 | } |
| 716 | |
| 717 | if (fm) |
| 718 | continue; |
| 719 | |
| 720 | fm = calloc(1, sizeof(*fm)); |
| 721 | strncpy(fm->__base, buf, sizeof(fm->__base) - 1); |
| 722 | fm->base = basename(fm->__base); |
| 723 | fm->key = sb.st_dev; |
| 724 | flist_add(&fm->list, &list); |
| 725 | } |
| 726 | |
| 727 | flist_for_each_safe(n, tmp, &list) { |
| 728 | unsigned long long sz; |
| 729 | |
| 730 | fm = flist_entry(n, struct fio_mount, list); |
| 731 | flist_del(&fm->list); |
| 732 | |
| 733 | sz = get_fs_size(fm->base); |
| 734 | if (sz && sz != -1ULL) |
| 735 | ret += sz; |
| 736 | |
| 737 | free(fm); |
| 738 | } |
| 739 | |
| 740 | return ret; |
| 741 | } |
| 742 | |
| 743 | uint64_t get_start_offset(struct thread_data *td, struct fio_file *f) |
| 744 | { |
| 745 | struct thread_options *o = &td->o; |
| 746 | |
| 747 | if (o->file_append && f->filetype == FIO_TYPE_FILE) |
| 748 | return f->real_file_size; |
| 749 | |
| 750 | return td->o.start_offset + |
| 751 | td->subjob_number * td->o.offset_increment; |
| 752 | } |
| 753 | |
| 754 | /* |
| 755 | * Open the files and setup files sizes, creating files if necessary. |
| 756 | */ |
| 757 | int setup_files(struct thread_data *td) |
| 758 | { |
| 759 | unsigned long long total_size, extend_size; |
| 760 | struct thread_options *o = &td->o; |
| 761 | struct fio_file *f; |
| 762 | unsigned int i, nr_fs_extra = 0; |
| 763 | int err = 0, need_extend; |
| 764 | int old_state; |
| 765 | const unsigned int bs = td_min_bs(td); |
| 766 | uint64_t fs = 0; |
| 767 | |
| 768 | dprint(FD_FILE, "setup files\n"); |
| 769 | |
| 770 | old_state = td_bump_runstate(td, TD_SETTING_UP); |
| 771 | |
| 772 | if (o->read_iolog_file) |
| 773 | goto done; |
| 774 | |
| 775 | /* |
| 776 | * if ioengine defines a setup() method, it's responsible for |
| 777 | * opening the files and setting f->real_file_size to indicate |
| 778 | * the valid range for that file. |
| 779 | */ |
| 780 | if (td->io_ops->setup) |
| 781 | err = td->io_ops->setup(td); |
| 782 | else |
| 783 | err = get_file_sizes(td); |
| 784 | |
| 785 | if (err) |
| 786 | goto err_out; |
| 787 | |
| 788 | /* |
| 789 | * check sizes. if the files/devices do not exist and the size |
| 790 | * isn't passed to fio, abort. |
| 791 | */ |
| 792 | total_size = 0; |
| 793 | for_each_file(td, f, i) { |
| 794 | if (f->real_file_size == -1ULL) |
| 795 | total_size = -1ULL; |
| 796 | else |
| 797 | total_size += f->real_file_size; |
| 798 | } |
| 799 | |
| 800 | if (o->fill_device) |
| 801 | td->fill_device_size = get_fs_free_counts(td); |
| 802 | |
| 803 | /* |
| 804 | * device/file sizes are zero and no size given, punt |
| 805 | */ |
| 806 | if ((!total_size || total_size == -1ULL) && !o->size && |
| 807 | !(td->io_ops->flags & FIO_NOIO) && !o->fill_device && |
| 808 | !(o->nr_files && (o->file_size_low || o->file_size_high))) { |
| 809 | log_err("%s: you need to specify size=\n", o->name); |
| 810 | td_verror(td, EINVAL, "total_file_size"); |
| 811 | goto err_out; |
| 812 | } |
| 813 | |
| 814 | /* |
| 815 | * Calculate per-file size and potential extra size for the |
| 816 | * first files, if needed. |
| 817 | */ |
| 818 | if (!o->file_size_low && o->nr_files) { |
| 819 | uint64_t all_fs; |
| 820 | |
| 821 | fs = o->size / o->nr_files; |
| 822 | all_fs = fs * o->nr_files; |
| 823 | |
| 824 | if (all_fs < o->size) |
| 825 | nr_fs_extra = (o->size - all_fs) / bs; |
| 826 | } |
| 827 | |
| 828 | /* |
| 829 | * now file sizes are known, so we can set ->io_size. if size= is |
| 830 | * not given, ->io_size is just equal to ->real_file_size. if size |
| 831 | * is given, ->io_size is size / nr_files. |
| 832 | */ |
| 833 | extend_size = total_size = 0; |
| 834 | need_extend = 0; |
| 835 | for_each_file(td, f, i) { |
| 836 | f->file_offset = get_start_offset(td, f); |
| 837 | |
| 838 | if (!o->file_size_low) { |
| 839 | /* |
| 840 | * no file size range given, file size is equal to |
| 841 | * total size divided by number of files. If that is |
| 842 | * zero, set it to the real file size. If the size |
| 843 | * doesn't divide nicely with the min blocksize, |
| 844 | * make the first files bigger. |
| 845 | */ |
| 846 | f->io_size = fs; |
| 847 | if (nr_fs_extra) { |
| 848 | nr_fs_extra--; |
| 849 | f->io_size += bs; |
| 850 | } |
| 851 | |
| 852 | if (!f->io_size) |
| 853 | f->io_size = f->real_file_size - f->file_offset; |
| 854 | } else if (f->real_file_size < o->file_size_low || |
| 855 | f->real_file_size > o->file_size_high) { |
| 856 | if (f->file_offset > o->file_size_low) |
| 857 | goto err_offset; |
| 858 | /* |
| 859 | * file size given. if it's fixed, use that. if it's a |
| 860 | * range, generate a random size in-between. |
| 861 | */ |
| 862 | if (o->file_size_low == o->file_size_high) |
| 863 | f->io_size = o->file_size_low - f->file_offset; |
| 864 | else { |
| 865 | f->io_size = get_rand_file_size(td) |
| 866 | - f->file_offset; |
| 867 | } |
| 868 | } else |
| 869 | f->io_size = f->real_file_size - f->file_offset; |
| 870 | |
| 871 | if (f->io_size == -1ULL) |
| 872 | total_size = -1ULL; |
| 873 | else { |
| 874 | if (o->size_percent) |
| 875 | f->io_size = (f->io_size * o->size_percent) / 100; |
| 876 | total_size += f->io_size; |
| 877 | } |
| 878 | |
| 879 | if (f->filetype == FIO_TYPE_FILE && |
| 880 | (f->io_size + f->file_offset) > f->real_file_size && |
| 881 | !(td->io_ops->flags & FIO_DISKLESSIO)) { |
| 882 | if (!o->create_on_open) { |
| 883 | need_extend++; |
| 884 | extend_size += (f->io_size + f->file_offset); |
| 885 | } else |
| 886 | f->real_file_size = f->io_size + f->file_offset; |
| 887 | fio_file_set_extend(f); |
| 888 | } |
| 889 | } |
| 890 | |
| 891 | if (td->o.block_error_hist) { |
| 892 | int len; |
| 893 | |
| 894 | assert(td->o.nr_files == 1); /* checked in fixup_options */ |
| 895 | f = td->files[0]; |
| 896 | len = f->io_size / td->o.bs[DDIR_TRIM]; |
| 897 | if (len > MAX_NR_BLOCK_INFOS || len <= 0) { |
| 898 | log_err("fio: cannot calculate block histogram with " |
| 899 | "%d trim blocks, maximum %d\n", |
| 900 | len, MAX_NR_BLOCK_INFOS); |
| 901 | td_verror(td, EINVAL, "block_error_hist"); |
| 902 | goto err_out; |
| 903 | } |
| 904 | |
| 905 | td->ts.nr_block_infos = len; |
| 906 | for (int i = 0; i < len; i++) |
| 907 | td->ts.block_infos[i] = |
| 908 | BLOCK_INFO(0, BLOCK_STATE_UNINIT); |
| 909 | } else |
| 910 | td->ts.nr_block_infos = 0; |
| 911 | |
| 912 | if (!o->size || (total_size && o->size > total_size)) |
| 913 | o->size = total_size; |
| 914 | |
| 915 | if (o->size < td_min_bs(td)) { |
| 916 | log_err("fio: blocksize too large for data set\n"); |
| 917 | goto err_out; |
| 918 | } |
| 919 | |
| 920 | /* |
| 921 | * See if we need to extend some files |
| 922 | */ |
| 923 | if (need_extend) { |
| 924 | temp_stall_ts = 1; |
| 925 | if (output_format == FIO_OUTPUT_NORMAL) |
| 926 | log_info("%s: Laying out IO file(s) (%u file(s) /" |
| 927 | " %lluMB)\n", o->name, need_extend, |
| 928 | extend_size >> 20); |
| 929 | |
| 930 | for_each_file(td, f, i) { |
| 931 | unsigned long long old_len = -1ULL, extend_len = -1ULL; |
| 932 | |
| 933 | if (!fio_file_extend(f)) |
| 934 | continue; |
| 935 | |
| 936 | assert(f->filetype == FIO_TYPE_FILE); |
| 937 | fio_file_clear_extend(f); |
| 938 | if (!o->fill_device) { |
| 939 | old_len = f->real_file_size; |
| 940 | extend_len = f->io_size + f->file_offset - |
| 941 | old_len; |
| 942 | } |
| 943 | f->real_file_size = (f->io_size + f->file_offset); |
| 944 | err = extend_file(td, f); |
| 945 | if (err) |
| 946 | break; |
| 947 | |
| 948 | err = __file_invalidate_cache(td, f, old_len, |
| 949 | extend_len); |
| 950 | |
| 951 | /* |
| 952 | * Shut up static checker |
| 953 | */ |
| 954 | if (f->fd != -1) |
| 955 | close(f->fd); |
| 956 | |
| 957 | f->fd = -1; |
| 958 | if (err) |
| 959 | break; |
| 960 | } |
| 961 | temp_stall_ts = 0; |
| 962 | } |
| 963 | |
| 964 | if (err) |
| 965 | goto err_out; |
| 966 | |
| 967 | if (!o->zone_size) |
| 968 | o->zone_size = o->size; |
| 969 | |
| 970 | /* |
| 971 | * iolog already set the total io size, if we read back |
| 972 | * stored entries. |
| 973 | */ |
| 974 | if (!o->read_iolog_file) { |
| 975 | if (o->io_limit) |
| 976 | td->total_io_size = o->io_limit * o->loops; |
| 977 | else |
| 978 | td->total_io_size = o->size * o->loops; |
| 979 | } |
| 980 | |
| 981 | done: |
| 982 | if (o->create_only) |
| 983 | td->done = 1; |
| 984 | |
| 985 | td_restore_runstate(td, old_state); |
| 986 | return 0; |
| 987 | err_offset: |
| 988 | log_err("%s: you need to specify valid offset=\n", o->name); |
| 989 | err_out: |
| 990 | td_restore_runstate(td, old_state); |
| 991 | return 1; |
| 992 | } |
| 993 | |
| 994 | int pre_read_files(struct thread_data *td) |
| 995 | { |
| 996 | struct fio_file *f; |
| 997 | unsigned int i; |
| 998 | |
| 999 | dprint(FD_FILE, "pre_read files\n"); |
| 1000 | |
| 1001 | for_each_file(td, f, i) { |
| 1002 | pre_read_file(td, f); |
| 1003 | } |
| 1004 | |
| 1005 | return 1; |
| 1006 | } |
| 1007 | |
| 1008 | static int __init_rand_distribution(struct thread_data *td, struct fio_file *f) |
| 1009 | { |
| 1010 | unsigned int range_size, seed; |
| 1011 | unsigned long nranges; |
| 1012 | uint64_t fsize; |
| 1013 | |
| 1014 | range_size = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]); |
| 1015 | fsize = min(f->real_file_size, f->io_size); |
| 1016 | |
| 1017 | nranges = (fsize + range_size - 1) / range_size; |
| 1018 | |
| 1019 | seed = jhash(f->file_name, strlen(f->file_name), 0) * td->thread_number; |
| 1020 | if (!td->o.rand_repeatable) |
| 1021 | seed = td->rand_seeds[4]; |
| 1022 | |
| 1023 | if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) |
| 1024 | zipf_init(&f->zipf, nranges, td->o.zipf_theta.u.f, seed); |
| 1025 | else if (td->o.random_distribution == FIO_RAND_DIST_PARETO) |
| 1026 | pareto_init(&f->zipf, nranges, td->o.pareto_h.u.f, seed); |
| 1027 | else if (td->o.random_distribution == FIO_RAND_DIST_GAUSS) |
| 1028 | gauss_init(&f->gauss, nranges, td->o.gauss_dev.u.f, seed); |
| 1029 | |
| 1030 | return 1; |
| 1031 | } |
| 1032 | |
| 1033 | static int init_rand_distribution(struct thread_data *td) |
| 1034 | { |
| 1035 | struct fio_file *f; |
| 1036 | unsigned int i; |
| 1037 | int state; |
| 1038 | |
| 1039 | if (td->o.random_distribution == FIO_RAND_DIST_RANDOM) |
| 1040 | return 0; |
| 1041 | |
| 1042 | state = td_bump_runstate(td, TD_SETTING_UP); |
| 1043 | |
| 1044 | for_each_file(td, f, i) |
| 1045 | __init_rand_distribution(td, f); |
| 1046 | |
| 1047 | td_restore_runstate(td, state); |
| 1048 | |
| 1049 | return 1; |
| 1050 | } |
| 1051 | |
| 1052 | int init_random_map(struct thread_data *td) |
| 1053 | { |
| 1054 | unsigned long long blocks; |
| 1055 | struct fio_file *f; |
| 1056 | unsigned int i; |
| 1057 | |
| 1058 | if (init_rand_distribution(td)) |
| 1059 | return 0; |
| 1060 | if (!td_random(td)) |
| 1061 | return 0; |
| 1062 | |
| 1063 | for_each_file(td, f, i) { |
| 1064 | uint64_t fsize = min(f->real_file_size, f->io_size); |
| 1065 | |
| 1066 | blocks = fsize / (unsigned long long) td->o.rw_min_bs; |
| 1067 | |
| 1068 | if (td->o.random_generator == FIO_RAND_GEN_LFSR) { |
| 1069 | unsigned long seed; |
| 1070 | |
| 1071 | seed = td->rand_seeds[FIO_RAND_BLOCK_OFF]; |
| 1072 | |
| 1073 | if (!lfsr_init(&f->lfsr, blocks, seed, 0)) { |
| 1074 | fio_file_set_lfsr(f); |
| 1075 | continue; |
| 1076 | } |
| 1077 | } else if (!td->o.norandommap) { |
| 1078 | f->io_axmap = axmap_new(blocks); |
| 1079 | if (f->io_axmap) { |
| 1080 | fio_file_set_axmap(f); |
| 1081 | continue; |
| 1082 | } |
| 1083 | } else if (td->o.norandommap) |
| 1084 | continue; |
| 1085 | |
| 1086 | if (!td->o.softrandommap) { |
| 1087 | log_err("fio: failed allocating random map. If running" |
| 1088 | " a large number of jobs, try the 'norandommap'" |
| 1089 | " option or set 'softrandommap'. Or give" |
| 1090 | " a larger --alloc-size to fio.\n"); |
| 1091 | return 1; |
| 1092 | } |
| 1093 | |
| 1094 | log_info("fio: file %s failed allocating random map. Running " |
| 1095 | "job without.\n", f->file_name); |
| 1096 | } |
| 1097 | |
| 1098 | return 0; |
| 1099 | } |
| 1100 | |
| 1101 | void close_files(struct thread_data *td) |
| 1102 | { |
| 1103 | struct fio_file *f; |
| 1104 | unsigned int i; |
| 1105 | |
| 1106 | for_each_file(td, f, i) { |
| 1107 | if (fio_file_open(f)) |
| 1108 | td_io_close_file(td, f); |
| 1109 | } |
| 1110 | } |
| 1111 | |
| 1112 | void close_and_free_files(struct thread_data *td) |
| 1113 | { |
| 1114 | struct fio_file *f; |
| 1115 | unsigned int i; |
| 1116 | |
| 1117 | dprint(FD_FILE, "close files\n"); |
| 1118 | |
| 1119 | for_each_file(td, f, i) { |
| 1120 | if (td->o.unlink && f->filetype == FIO_TYPE_FILE) { |
| 1121 | dprint(FD_FILE, "free unlink %s\n", f->file_name); |
| 1122 | td_io_unlink_file(td, f); |
| 1123 | } |
| 1124 | |
| 1125 | if (fio_file_open(f)) |
| 1126 | td_io_close_file(td, f); |
| 1127 | |
| 1128 | remove_file_hash(f); |
| 1129 | |
| 1130 | if (td->o.unlink && f->filetype == FIO_TYPE_FILE) { |
| 1131 | dprint(FD_FILE, "free unlink %s\n", f->file_name); |
| 1132 | td_io_unlink_file(td, f); |
| 1133 | } |
| 1134 | |
| 1135 | sfree(f->file_name); |
| 1136 | f->file_name = NULL; |
| 1137 | if (fio_file_axmap(f)) { |
| 1138 | axmap_free(f->io_axmap); |
| 1139 | f->io_axmap = NULL; |
| 1140 | } |
| 1141 | sfree(f); |
| 1142 | } |
| 1143 | |
| 1144 | td->o.filename = NULL; |
| 1145 | free(td->files); |
| 1146 | free(td->file_locks); |
| 1147 | td->files_index = 0; |
| 1148 | td->files = NULL; |
| 1149 | td->file_locks = NULL; |
| 1150 | td->o.file_lock_mode = FILE_LOCK_NONE; |
| 1151 | td->o.nr_files = 0; |
| 1152 | } |
| 1153 | |
| 1154 | static void get_file_type(struct fio_file *f) |
| 1155 | { |
| 1156 | struct stat sb; |
| 1157 | |
| 1158 | if (!strcmp(f->file_name, "-")) |
| 1159 | f->filetype = FIO_TYPE_PIPE; |
| 1160 | else |
| 1161 | f->filetype = FIO_TYPE_FILE; |
| 1162 | |
| 1163 | /* \\.\ is the device namespace in Windows, where every file is |
| 1164 | * a block device */ |
| 1165 | if (strncmp(f->file_name, "\\\\.\\", 4) == 0) |
| 1166 | f->filetype = FIO_TYPE_BD; |
| 1167 | |
| 1168 | if (!stat(f->file_name, &sb)) { |
| 1169 | if (S_ISBLK(sb.st_mode)) |
| 1170 | f->filetype = FIO_TYPE_BD; |
| 1171 | else if (S_ISCHR(sb.st_mode)) |
| 1172 | f->filetype = FIO_TYPE_CHAR; |
| 1173 | else if (S_ISFIFO(sb.st_mode)) |
| 1174 | f->filetype = FIO_TYPE_PIPE; |
| 1175 | } |
| 1176 | } |
| 1177 | |
| 1178 | static int __is_already_allocated(const char *fname) |
| 1179 | { |
| 1180 | struct flist_head *entry; |
| 1181 | char *filename; |
| 1182 | |
| 1183 | if (flist_empty(&filename_list)) |
| 1184 | return 0; |
| 1185 | |
| 1186 | flist_for_each(entry, &filename_list) { |
| 1187 | filename = flist_entry(entry, struct file_name, list)->filename; |
| 1188 | |
| 1189 | if (strcmp(filename, fname) == 0) |
| 1190 | return 1; |
| 1191 | } |
| 1192 | |
| 1193 | return 0; |
| 1194 | } |
| 1195 | |
| 1196 | static int is_already_allocated(const char *fname) |
| 1197 | { |
| 1198 | int ret; |
| 1199 | |
| 1200 | fio_file_hash_lock(); |
| 1201 | ret = __is_already_allocated(fname); |
| 1202 | fio_file_hash_unlock(); |
| 1203 | return ret; |
| 1204 | } |
| 1205 | |
| 1206 | static void set_already_allocated(const char *fname) |
| 1207 | { |
| 1208 | struct file_name *fn; |
| 1209 | |
| 1210 | fn = malloc(sizeof(struct file_name)); |
| 1211 | fn->filename = strdup(fname); |
| 1212 | |
| 1213 | fio_file_hash_lock(); |
| 1214 | if (!__is_already_allocated(fname)) { |
| 1215 | flist_add_tail(&fn->list, &filename_list); |
| 1216 | fn = NULL; |
| 1217 | } |
| 1218 | fio_file_hash_unlock(); |
| 1219 | |
| 1220 | if (fn) { |
| 1221 | free(fn->filename); |
| 1222 | free(fn); |
| 1223 | } |
| 1224 | } |
| 1225 | |
| 1226 | |
| 1227 | static void free_already_allocated(void) |
| 1228 | { |
| 1229 | struct flist_head *entry, *tmp; |
| 1230 | struct file_name *fn; |
| 1231 | |
| 1232 | if (flist_empty(&filename_list)) |
| 1233 | return; |
| 1234 | |
| 1235 | fio_file_hash_lock(); |
| 1236 | flist_for_each_safe(entry, tmp, &filename_list) { |
| 1237 | fn = flist_entry(entry, struct file_name, list); |
| 1238 | free(fn->filename); |
| 1239 | flist_del(&fn->list); |
| 1240 | free(fn); |
| 1241 | } |
| 1242 | |
| 1243 | fio_file_hash_unlock(); |
| 1244 | } |
| 1245 | |
| 1246 | static struct fio_file *alloc_new_file(struct thread_data *td) |
| 1247 | { |
| 1248 | struct fio_file *f; |
| 1249 | |
| 1250 | f = smalloc(sizeof(*f)); |
| 1251 | if (!f) { |
| 1252 | log_err("fio: smalloc OOM\n"); |
| 1253 | assert(0); |
| 1254 | return NULL; |
| 1255 | } |
| 1256 | |
| 1257 | f->fd = -1; |
| 1258 | f->shadow_fd = -1; |
| 1259 | fio_file_reset(td, f); |
| 1260 | return f; |
| 1261 | } |
| 1262 | |
| 1263 | int add_file(struct thread_data *td, const char *fname, int numjob, int inc) |
| 1264 | { |
| 1265 | int cur_files = td->files_index; |
| 1266 | char file_name[PATH_MAX]; |
| 1267 | struct fio_file *f; |
| 1268 | int len = 0; |
| 1269 | |
| 1270 | dprint(FD_FILE, "add file %s\n", fname); |
| 1271 | |
| 1272 | if (td->o.directory) |
| 1273 | len = set_name_idx(file_name, PATH_MAX, td->o.directory, numjob); |
| 1274 | |
| 1275 | sprintf(file_name + len, "%s", fname); |
| 1276 | |
| 1277 | /* clean cloned siblings using existing files */ |
| 1278 | if (numjob && is_already_allocated(file_name)) |
| 1279 | return 0; |
| 1280 | |
| 1281 | f = alloc_new_file(td); |
| 1282 | |
| 1283 | if (td->files_size <= td->files_index) { |
| 1284 | unsigned int new_size = td->o.nr_files + 1; |
| 1285 | |
| 1286 | dprint(FD_FILE, "resize file array to %d files\n", new_size); |
| 1287 | |
| 1288 | td->files = realloc(td->files, new_size * sizeof(f)); |
| 1289 | if (td->files == NULL) { |
| 1290 | log_err("fio: realloc OOM\n"); |
| 1291 | assert(0); |
| 1292 | } |
| 1293 | if (td->o.file_lock_mode != FILE_LOCK_NONE) { |
| 1294 | td->file_locks = realloc(td->file_locks, new_size); |
| 1295 | if (!td->file_locks) { |
| 1296 | log_err("fio: realloc OOM\n"); |
| 1297 | assert(0); |
| 1298 | } |
| 1299 | td->file_locks[cur_files] = FILE_LOCK_NONE; |
| 1300 | } |
| 1301 | td->files_size = new_size; |
| 1302 | } |
| 1303 | td->files[cur_files] = f; |
| 1304 | f->fileno = cur_files; |
| 1305 | |
| 1306 | /* |
| 1307 | * init function, io engine may not be loaded yet |
| 1308 | */ |
| 1309 | if (td->io_ops && (td->io_ops->flags & FIO_DISKLESSIO)) |
| 1310 | f->real_file_size = -1ULL; |
| 1311 | |
| 1312 | f->file_name = smalloc_strdup(file_name); |
| 1313 | if (!f->file_name) { |
| 1314 | log_err("fio: smalloc OOM\n"); |
| 1315 | assert(0); |
| 1316 | } |
| 1317 | |
| 1318 | get_file_type(f); |
| 1319 | |
| 1320 | switch (td->o.file_lock_mode) { |
| 1321 | case FILE_LOCK_NONE: |
| 1322 | break; |
| 1323 | case FILE_LOCK_READWRITE: |
| 1324 | f->rwlock = fio_rwlock_init(); |
| 1325 | break; |
| 1326 | case FILE_LOCK_EXCLUSIVE: |
| 1327 | f->lock = fio_mutex_init(FIO_MUTEX_UNLOCKED); |
| 1328 | break; |
| 1329 | default: |
| 1330 | log_err("fio: unknown lock mode: %d\n", td->o.file_lock_mode); |
| 1331 | assert(0); |
| 1332 | } |
| 1333 | |
| 1334 | td->files_index++; |
| 1335 | if (f->filetype == FIO_TYPE_FILE) |
| 1336 | td->nr_normal_files++; |
| 1337 | |
| 1338 | set_already_allocated(file_name); |
| 1339 | |
| 1340 | if (inc) |
| 1341 | td->o.nr_files++; |
| 1342 | |
| 1343 | dprint(FD_FILE, "file %p \"%s\" added at %d\n", f, f->file_name, |
| 1344 | cur_files); |
| 1345 | |
| 1346 | return cur_files; |
| 1347 | } |
| 1348 | |
| 1349 | int add_file_exclusive(struct thread_data *td, const char *fname) |
| 1350 | { |
| 1351 | struct fio_file *f; |
| 1352 | unsigned int i; |
| 1353 | |
| 1354 | for_each_file(td, f, i) { |
| 1355 | if (!strcmp(f->file_name, fname)) |
| 1356 | return i; |
| 1357 | } |
| 1358 | |
| 1359 | return add_file(td, fname, 0, 1); |
| 1360 | } |
| 1361 | |
| 1362 | void get_file(struct fio_file *f) |
| 1363 | { |
| 1364 | dprint(FD_FILE, "get file %s, ref=%d\n", f->file_name, f->references); |
| 1365 | assert(fio_file_open(f)); |
| 1366 | f->references++; |
| 1367 | } |
| 1368 | |
| 1369 | int put_file(struct thread_data *td, struct fio_file *f) |
| 1370 | { |
| 1371 | int f_ret = 0, ret = 0; |
| 1372 | |
| 1373 | dprint(FD_FILE, "put file %s, ref=%d\n", f->file_name, f->references); |
| 1374 | |
| 1375 | if (!fio_file_open(f)) { |
| 1376 | assert(f->fd == -1); |
| 1377 | return 0; |
| 1378 | } |
| 1379 | |
| 1380 | assert(f->references); |
| 1381 | if (--f->references) |
| 1382 | return 0; |
| 1383 | |
| 1384 | if (should_fsync(td) && td->o.fsync_on_close) { |
| 1385 | f_ret = fsync(f->fd); |
| 1386 | if (f_ret < 0) |
| 1387 | f_ret = errno; |
| 1388 | } |
| 1389 | |
| 1390 | if (td->io_ops->close_file) |
| 1391 | ret = td->io_ops->close_file(td, f); |
| 1392 | |
| 1393 | if (!ret) |
| 1394 | ret = f_ret; |
| 1395 | |
| 1396 | td->nr_open_files--; |
| 1397 | fio_file_clear_open(f); |
| 1398 | assert(f->fd == -1); |
| 1399 | return ret; |
| 1400 | } |
| 1401 | |
| 1402 | void lock_file(struct thread_data *td, struct fio_file *f, enum fio_ddir ddir) |
| 1403 | { |
| 1404 | if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE) |
| 1405 | return; |
| 1406 | |
| 1407 | if (td->o.file_lock_mode == FILE_LOCK_READWRITE) { |
| 1408 | if (ddir == DDIR_READ) |
| 1409 | fio_rwlock_read(f->rwlock); |
| 1410 | else |
| 1411 | fio_rwlock_write(f->rwlock); |
| 1412 | } else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) |
| 1413 | fio_mutex_down(f->lock); |
| 1414 | |
| 1415 | td->file_locks[f->fileno] = td->o.file_lock_mode; |
| 1416 | } |
| 1417 | |
| 1418 | void unlock_file(struct thread_data *td, struct fio_file *f) |
| 1419 | { |
| 1420 | if (!f->lock || td->o.file_lock_mode == FILE_LOCK_NONE) |
| 1421 | return; |
| 1422 | |
| 1423 | if (td->o.file_lock_mode == FILE_LOCK_READWRITE) |
| 1424 | fio_rwlock_unlock(f->rwlock); |
| 1425 | else if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) |
| 1426 | fio_mutex_up(f->lock); |
| 1427 | |
| 1428 | td->file_locks[f->fileno] = FILE_LOCK_NONE; |
| 1429 | } |
| 1430 | |
| 1431 | void unlock_file_all(struct thread_data *td, struct fio_file *f) |
| 1432 | { |
| 1433 | if (td->o.file_lock_mode == FILE_LOCK_NONE || !td->file_locks) |
| 1434 | return; |
| 1435 | if (td->file_locks[f->fileno] != FILE_LOCK_NONE) |
| 1436 | unlock_file(td, f); |
| 1437 | } |
| 1438 | |
| 1439 | static int recurse_dir(struct thread_data *td, const char *dirname) |
| 1440 | { |
| 1441 | struct dirent *dir; |
| 1442 | int ret = 0; |
| 1443 | DIR *D; |
| 1444 | |
| 1445 | D = opendir(dirname); |
| 1446 | if (!D) { |
| 1447 | char buf[FIO_VERROR_SIZE]; |
| 1448 | |
| 1449 | snprintf(buf, FIO_VERROR_SIZE, "opendir(%s)", dirname); |
| 1450 | td_verror(td, errno, buf); |
| 1451 | return 1; |
| 1452 | } |
| 1453 | |
| 1454 | while ((dir = readdir(D)) != NULL) { |
| 1455 | char full_path[PATH_MAX]; |
| 1456 | struct stat sb; |
| 1457 | |
| 1458 | if (!strcmp(dir->d_name, ".") || !strcmp(dir->d_name, "..")) |
| 1459 | continue; |
| 1460 | |
| 1461 | sprintf(full_path, "%s%s%s", dirname, FIO_OS_PATH_SEPARATOR, dir->d_name); |
| 1462 | |
| 1463 | if (lstat(full_path, &sb) == -1) { |
| 1464 | if (errno != ENOENT) { |
| 1465 | td_verror(td, errno, "stat"); |
| 1466 | ret = 1; |
| 1467 | break; |
| 1468 | } |
| 1469 | } |
| 1470 | |
| 1471 | if (S_ISREG(sb.st_mode)) { |
| 1472 | add_file(td, full_path, 0, 1); |
| 1473 | continue; |
| 1474 | } |
| 1475 | if (!S_ISDIR(sb.st_mode)) |
| 1476 | continue; |
| 1477 | |
| 1478 | ret = recurse_dir(td, full_path); |
| 1479 | if (ret) |
| 1480 | break; |
| 1481 | } |
| 1482 | |
| 1483 | closedir(D); |
| 1484 | return ret; |
| 1485 | } |
| 1486 | |
| 1487 | int add_dir_files(struct thread_data *td, const char *path) |
| 1488 | { |
| 1489 | int ret = recurse_dir(td, path); |
| 1490 | |
| 1491 | if (!ret) |
| 1492 | log_info("fio: opendir added %d files\n", td->o.nr_files); |
| 1493 | |
| 1494 | return ret; |
| 1495 | } |
| 1496 | |
| 1497 | void dup_files(struct thread_data *td, struct thread_data *org) |
| 1498 | { |
| 1499 | struct fio_file *f; |
| 1500 | unsigned int i; |
| 1501 | |
| 1502 | dprint(FD_FILE, "dup files: %d\n", org->files_index); |
| 1503 | |
| 1504 | if (!org->files) |
| 1505 | return; |
| 1506 | |
| 1507 | td->files = malloc(org->files_index * sizeof(f)); |
| 1508 | |
| 1509 | if (td->o.file_lock_mode != FILE_LOCK_NONE) |
| 1510 | td->file_locks = malloc(org->files_index); |
| 1511 | |
| 1512 | for_each_file(org, f, i) { |
| 1513 | struct fio_file *__f; |
| 1514 | |
| 1515 | __f = alloc_new_file(td); |
| 1516 | |
| 1517 | if (f->file_name) { |
| 1518 | __f->file_name = smalloc_strdup(f->file_name); |
| 1519 | if (!__f->file_name) { |
| 1520 | log_err("fio: smalloc OOM\n"); |
| 1521 | assert(0); |
| 1522 | } |
| 1523 | |
| 1524 | __f->filetype = f->filetype; |
| 1525 | } |
| 1526 | |
| 1527 | if (td->o.file_lock_mode == FILE_LOCK_EXCLUSIVE) |
| 1528 | __f->lock = f->lock; |
| 1529 | else if (td->o.file_lock_mode == FILE_LOCK_READWRITE) |
| 1530 | __f->rwlock = f->rwlock; |
| 1531 | |
| 1532 | td->files[i] = __f; |
| 1533 | } |
| 1534 | } |
| 1535 | |
| 1536 | /* |
| 1537 | * Returns the index that matches the filename, or -1 if not there |
| 1538 | */ |
| 1539 | int get_fileno(struct thread_data *td, const char *fname) |
| 1540 | { |
| 1541 | struct fio_file *f; |
| 1542 | unsigned int i; |
| 1543 | |
| 1544 | for_each_file(td, f, i) |
| 1545 | if (!strcmp(f->file_name, fname)) |
| 1546 | return i; |
| 1547 | |
| 1548 | return -1; |
| 1549 | } |
| 1550 | |
| 1551 | /* |
| 1552 | * For log usage, where we add/open/close files automatically |
| 1553 | */ |
| 1554 | void free_release_files(struct thread_data *td) |
| 1555 | { |
| 1556 | close_files(td); |
| 1557 | td->o.nr_files = 0; |
| 1558 | td->o.open_files = 0; |
| 1559 | td->files_index = 0; |
| 1560 | td->nr_normal_files = 0; |
| 1561 | } |
| 1562 | |
| 1563 | void fio_file_reset(struct thread_data *td, struct fio_file *f) |
| 1564 | { |
| 1565 | int i; |
| 1566 | |
| 1567 | for (i = 0; i < DDIR_RWDIR_CNT; i++) { |
| 1568 | f->last_pos[i] = f->file_offset; |
| 1569 | f->last_start[i] = -1ULL; |
| 1570 | } |
| 1571 | |
| 1572 | if (fio_file_axmap(f)) |
| 1573 | axmap_reset(f->io_axmap); |
| 1574 | else if (fio_file_lfsr(f)) |
| 1575 | lfsr_reset(&f->lfsr, td->rand_seeds[FIO_RAND_BLOCK_OFF]); |
| 1576 | } |
| 1577 | |
| 1578 | int fio_files_done(struct thread_data *td) |
| 1579 | { |
| 1580 | struct fio_file *f; |
| 1581 | unsigned int i; |
| 1582 | |
| 1583 | for_each_file(td, f, i) |
| 1584 | if (!fio_file_done(f)) |
| 1585 | return 0; |
| 1586 | |
| 1587 | return 1; |
| 1588 | } |
| 1589 | |
| 1590 | /* free memory used in initialization phase only */ |
| 1591 | void filesetup_mem_free(void) |
| 1592 | { |
| 1593 | free_already_allocated(); |
| 1594 | } |